package com.hzhc.utils;


import org.apache.commons.lang3.StringUtils;

import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.LineNumberReader;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 * @ClassName: IPUtils
 * @Description:
 * @version 1.0
 * @author: duanhm
 * @Date: 2019/11/20 18:19:01
 * 
 */
public class IpUtils {
	/**
	 * 获取当前网络ip
	 * 
	 * @param request
	 * @return
	 */
	public static String getIpAddr(HttpServletRequest request) {
		String ipAddress = request.getHeader("x-forwarded-for");
		String unknown = "unknown";
		String localip4 = "127.0.0.1";
		String localip6 = "0:0:0:0:0:0:0:1";
		if (ipAddress == null || ipAddress.length() == 0 || unknown.equalsIgnoreCase(ipAddress)) {
			ipAddress = request.getHeader("Proxy-Client-IP");
		}
		if (ipAddress == null || ipAddress.length() == 0 || unknown.equalsIgnoreCase(ipAddress)) {
			ipAddress = request.getHeader("WL-Proxy-Client-IP");
		}
		if (ipAddress == null || ipAddress.length() == 0 || unknown.equalsIgnoreCase(ipAddress)) {
			ipAddress = request.getRemoteAddr();
			if (localip4.equals(ipAddress) || localip6.equals(ipAddress)) {
				// 根据网卡取本机配置的IP
				InetAddress inet = null;
				try {
					inet = InetAddress.getLocalHost();
				} catch (UnknownHostException e) {
					e.printStackTrace();
				}
				ipAddress = inet.getHostAddress();
			}
		}
		// 对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
		// "***.***.***.***".length() = 15
		int i = 15;
		if (ipAddress != null && ipAddress.length() > i) {
			String str = ",";
			if (ipAddress.indexOf(str) > 0) {
				ipAddress = ipAddress.substring(0, ipAddress.indexOf(str));
			}
		}
		return ipAddress;
	}

	/**
	 * 获得MAC地址
	 * 
	 * @param ip
	 * @return
	 */
	public static String getMacAddress(String ip) {
		String str = "";
		String macAddress = "";
		try {
			Process p = Runtime.getRuntime().exec("nbtstat -A " + ip);
			InputStreamReader ir = new InputStreamReader(p.getInputStream());
			LineNumberReader input = new LineNumberReader(ir);
			int j = 100;
			for (int i = 1; i < j; i++) {
				str = input.readLine();
				if (str != null) {
					if (str.indexOf("MAC Address") > 1) {
						macAddress = str.substring(str.indexOf("MAC Address") + 14, str.length());
						break;
					}
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		return macAddress;
	}

	public static String getScheme(HttpServletRequest request) {
		String scheme = request.getHeader("X-Forwarded-Proto");
		if (StringUtils.isBlank(scheme)) {
			scheme = request.getScheme();
		}
		return scheme;
	}
}
